Bitcoin Space Heater Assembly & Maintenance Guide

What Is a Bitcoin Space Heater?

Every watt of electricity that enters an ASIC miner exits as heat. That is not a design flaw — it is thermodynamics. A Bitcoin space heater is simply the honest acknowledgment of this physics: take the heat that a mining rig already produces, direct it into a living space, and let it do useful work. You are not wasting energy on heating — you are mining Bitcoin, and the heat is a free byproduct. Or, looked at from the other direction: you are heating your home, and the Bitcoin is a free byproduct. Either way, you win.

D-Central Technologies pioneered the Bitcoin space heater concept for the home miner. Our Space Heater Edition miners take refurbished, quality-tested ASIC hardware — Antminer S9, S17, S19 series, and BitChimney single-hashboard units — and house them in custom 3D-printed enclosures engineered to channel hot exhaust air into your room instead of venting it outside. The result is a device that sits in your living room, office, or workshop, quietly hashing SHA-256 while keeping you warm through a Canadian winter.

Think about it. Your electricity bill was going to pay for heating anyway. In Quebec, where D-Central is headquartered, the average home spends thousands per year on electric heating. A Bitcoin space heater converts that same electricity into heat plus Bitcoin mining revenue. The heat output is identical to a traditional electric space heater of the same wattage — because physics does not care what the electricity did before it became heat. A 1,000W space heater and a 1,000W Bitcoin miner both produce exactly 3,412 BTU/hr of heat. The difference is that one of them also earns you satoshis.

This guide covers everything you need to know to assemble, configure, operate, and maintain a D-Central Bitcoin Space Heater — whether you purchased a fully assembled Space Heater Edition, a DIY case kit, or a BitChimney. We will walk you through the enclosure assembly, miner installation, electrical connections, mining pool configuration, heat output calculations, noise management, and ongoing maintenance. By the end, your space heater will be hashing and heating.

D-Central Space Heater Product Lineup

D-Central offers multiple space heater configurations to match different hashrate targets, noise tolerances, power availability, and budgets. Here is the full lineup.

Space Heater Editions (Fully Assembled)

These are plug-and-play units. D-Central takes a refurbished, tested ASIC miner, installs it in a custom 3D-printed enclosure with premium silent fans, pairs it with the correct power supply, and ships it ready to run. You connect power, plug in Ethernet (or configure WiFi via a Vonets bridge), set your mining pool, and start hashing.

DIY Cases

For miners who already own compatible ASIC hardware, D-Central sells the enclosure separately. The Bitcoin Space Heater DIY Case fits the Antminer S9 (with APW3 PSU), and the Bitcoin Space Heater XL DIY Case fits the Antminer S17/T17 series (with APW9 PSU). You supply the miner, PSU, and fans — the case handles the heat direction and noise management. The DIY case design is fully open-source.

BitChimney

The BitChimney is a compact single-hashboard space heater designed in collaboration with AltairTech and exclusively manufactured by D-Central. It runs a single S19-series hashboard in the Loki configuration, delivering meaningful hashrate at lower power draw — ideal for smaller rooms or supplemental heating. The BitChimney includes the case, fans, hashboard, Loki DIY kit, and silent APW3 PSU.

Technical Specifications

Here is a side-by-side comparison of D-Central’s space heater configurations. Use this table to match the right unit to your room size, power availability, and heating needs.

Before You Begin

Safety Warnings

A Bitcoin space heater is a real electrical appliance that draws significant power and produces real heat. This is not a USB gadget. Treat it with the same respect you would give any 1,000W+ electrical device. Read every warning in this section before you plug anything in.

Assembly: Fully Assembled Space Heater Editions

If you purchased a fully assembled S9 Space Heater Edition, S17 Space Heater Edition, or BitChimney, the miner, fans, and PSU are already installed inside the enclosure. Your setup is straightforward.

Step 1 — Unboxing and Inspection

1. Inspect the packaging for obvious shipping damage before opening. If the box is crushed or severely dented, photograph it before opening and contact D-Central support.
2. Remove the unit carefully from the packaging. These units weigh 7–13 kg — support the bottom.
3. Verify all components are present:
   • Space heater enclosure with miner and fans pre-installed
   • Power supply unit (APW3 or APW9, already connected inside)
   • Power cord (verify the correct plug type for your region)
4. Inspect the enclosure — check that the 3D-printed case has no cracks, that fans are securely mounted, and that no cables are loose or pinched.
5. Check the intake and exhaust vents — both must be clear and unobstructed. Remove any shipping foam or protective inserts.

Step 2 — Placement

Where you place your Bitcoin space heater determines its effectiveness as both a miner and a heater. Choose the location carefully.

• Hard, flat surface — Place the unit on a hard floor (tile, hardwood, concrete) or a sturdy table/shelf. Never on carpet, rugs, or bedding.
• Wall clearance — Maintain at least 30 cm (12 inches) clearance behind and beside the unit, and 1 meter (3 feet) clearance in front of the exhaust vent.
• Intake air access — The intake side (usually the back or bottom) needs access to room-temperature air. Do not push the unit against a wall or into a corner where air cannot circulate.
• Central room placement is ideal — Placing the heater in the center of the room (or at least on the side opposite the door) promotes even heat distribution.
• Near an Ethernet jack or router — These miners use Ethernet for connectivity. Run a cable to the nearest Ethernet port. If your router is in another room, consider a long Ethernet run or a Vonets WiFi bridge (available from D-Central).
• Accessible power outlet — The unit needs a grounded outlet on a circuit with sufficient capacity. Do not use extension cords for high-wattage mining equipment — plug directly into a wall outlet or a heavy-duty surge protector rated for the load.

Step 3 — Connect Power and Ethernet

1. Connect the Ethernet cable from your router or network switch to the Ethernet port on the miner (accessible through the enclosure). Ensure a solid click.
2. Connect the power cord to the PSU power input socket on the enclosure.
3. Plug the power cord into the wall outlet. The PSU will power on immediately — there is no power button on most Antminer PSUs. You should hear fans spin up within 2–3 seconds.
4. Listen and observe — Fans should reach a steady speed within 30 seconds. You should hear consistent airflow. If you hear grinding, rattling, or intermittent fan stuttering, power off and inspect.

Within 60 seconds, the miner’s control board will boot, obtain an IP address via DHCP from your router, and begin initializing the hashboards. The unit is now running, but it is not yet configured for your mining pool — proceed to the Mining Configuration section.

Assembly: DIY Case Build

Building a space heater from a D-Central DIY case and your own ASIC hardware is a hands-on project that takes about 60 minutes. This section walks through the process step by step.

Step 1 — Prepare Your Components

Lay out everything on a clean, static-free work surface. Verify you have all parts before starting assembly.

• DIY Case parts: Top section, body section, bottom section (3 pieces, 3D-printed)
• Fan adapters: 2x 140mm-to-120mm adapters (included with S9 DIY case) or fan spacer (included with XL case)
• Your Antminer: S9 (for standard case) or S17/T17 series (for XL case) — must be in working condition
• Power supply: APW3 (for S9) or APW9 (for S17) — must match the miner
• Silent fans: Noctua iPPC-3000 140mm, Arctic P14 Max, or equivalent
• Screwdriver: Phillips-head for fan mounting and case assembly

Step 2 — Remove Stock Fans from the Miner

The stock Antminer fans are designed for data centers — they are extremely loud (75–80+ dB). The entire point of the space heater enclosure is to replace them with silent aftermarket fans.

1. Disconnect the miner from all power. Unplug the power cord from the wall. Wait 30 seconds for capacitors to discharge.
2. Disconnect the fan cables from the control board. These are small 4-pin connectors. Gently pull the connector, not the wires.
3. Remove the fan guards/grilles if present (usually held by clips or screws).
4. Slide the stock fans out of the fan shroud. They are typically friction-fit or held by screws at the corners.
5. Set the stock fans aside. Keep them — they are useful for diagnostic testing if you ever need to bench-test the miner outside the enclosure.

Step 3 — Install the Miner in the Case

1. Open the case by separating the top section from the body. The 3D-printed sections typically interlock with friction tabs or align via guide rails.
2. Position the miner inside the body section. The miner’s intake side (where the front fans were) should face the case’s intake opening. The exhaust side (where the rear fans were) should face the case’s exhaust opening. The airflow path must be unobstructed: cool air in one side, hot air out the other.
3. Seat the miner securely — the 3D-printed interior is designed to cradle the miner’s form factor. It should fit snugly without excessive force. If the miner feels loose, use small foam spacers (not flammable) to stabilize it.
4. Route the power cables from the PSU to the miner. D-Central’s cases are designed with cable routing channels. Keep cables away from fan blades and intake/exhaust paths.

Step 4 — Install Silent Fans

The aftermarket fans are the key to making your space heater livable in a home environment.

1. Attach the fan adapters (140mm-to-120mm) to the case’s fan mounting positions if using the S9 DIY case. For the XL case, use the included fan spacer for mounting.
2. Mount the silent fans to the adapters or directly to the case fan mounts using the included screws. Ensure the fan airflow direction matches the case design — air should flow in through the intake and out through the exhaust. Most fans have an airflow direction arrow printed on the frame.
3. Connect the fan power cables to the miner’s fan headers on the control board. The Noctua and Arctic fans use standard 4-pin PWM connectors. The miner’s firmware controls fan speed automatically based on chip temperature.
4. Verify fan clearance — spin each fan blade gently by hand to confirm nothing is rubbing against the case, cables, or other components.

Step 5 — Install the Power Supply

1. Position the PSU inside the case (some DIY case designs house the PSU internally; others mount it externally). Follow the case’s intended PSU placement.
2. Connect the PSU power cables to the miner’s hashboard power connectors and control board power connector. Each hashboard typically requires one 6-pin PCIe-style connector. The control board requires its own power connection. Consult your miner’s documentation for the exact cabling layout.
3. Secure all connections — ensure every power connector clicks into place firmly. A loose hashboard power connector is one of the most common causes of hashboard dropouts and can cause arcing at the connector pins.

Step 6 — Close the Case and Final Verification

1. Close the case by aligning the top section onto the body. Ensure the interlock tabs engage securely.
2. Do a final visual inspection through the intake and exhaust openings:
   • No cables in the fan path
   • No loose screws or small parts inside the case
   • Fans are oriented correctly
   • All power connections seated
3. Connect Ethernet to the miner’s Ethernet port.
4. Connect power cord to the PSU and plug into the wall.
5. Power on and listen — fans should spin up smoothly, and you should feel warm air beginning to flow from the exhaust within 60 seconds as the miner initializes.

Mining Pool Configuration

Your space heater is assembled, powered on, and hashing. Now you need to tell it where to send its work and where to deposit your Bitcoin earnings. This is done through the miner’s web-based interface.

Step 1 — Find Your Miner’s IP Address

The Antminer obtains an IP address from your router via DHCP. To find it:

• Check your router’s admin page — log into your router (typically at 192.168.1.1 or 192.168.0.1) and look in the connected devices / DHCP clients list for a device named “Antminer” or the miner’s MAC address.
• Use a network scanner — apps like Advanced IP Scanner (Windows) or Fing (iOS/Android) will detect all devices on your network.
• Use Bitmain’s IP Reporter tool — available from Bitmain’s website for Windows. It detects Antminers on the local network.

# Scan your local subnet for devices with open port 80 (web interface)
nmap -p 80 --open 192.168.1.0/24

# Or use arp to find all devices, then check each IP in your browser
arp -a

Step 2 — Access the Miner’s Web Interface

Open a web browser on any device connected to the same network and navigate to the miner’s IP address:

http://192.168.1.XXX

Replace XXX with your miner’s actual IP address. The default Antminer login credentials are:

Step 3 — Configure Your Mining Pool

In the miner’s web interface, navigate to Miner Configuration (or Settings > Pool depending on firmware). You will see fields for up to three mining pools (Pool 1, Pool 2, Pool 3). Configure Pool 1 as your primary:

Configure Pool 2 as a failover in case your primary pool goes down. Use a different pool for redundancy. Pool 3 is another backup. Click Save & Apply. The miner will restart and begin hashing against your configured pool within 30–60 seconds.

Step 4 — Fan Speed Optimization for Heat and Noise

The balance between heat output, noise, and mining stability is the art of space heater tuning. Here is how to think about it:

• Lower fan speed = warmer exhaust air — The air stays in contact with the heatsinks longer, absorbing more heat before exiting the enclosure. The exhaust feels hotter, but the miner runs hotter too.
• Higher fan speed = cooler chips, more noise — More airflow keeps the ASIC chips cooler, but the exhaust air is slightly less warm (though the total heat output in BTUs is identical regardless of fan speed — it is the same wattage).
• The sweet spot — Run the fans at the lowest speed that keeps chip temperatures below 75 °C for S9, 80 °C for S17, and 80 °C for S19 hashboards. This minimizes noise while maintaining mining stability.

On stock Antminer firmware, fan speed is controlled automatically based on target temperature. You can adjust the target temperature in the miner’s web interface under Miner Configuration > Fan Settings. On Braiins OS, you have finer control — you can set minimum and maximum fan speeds as percentages, and the firmware auto-tunes between them.

Heat Output & Room Sizing

This is the section that proves the Bitcoin space heater is not a gimmick — it is physics. Every watt your miner consumes becomes heat. Here is the math.

BTU Calculations

The conversion factor is simple: 1 Watt = 3.412 BTU/hr. This is not an approximation — it is a physical constant. An ASIC miner converts electrical energy into computational work, and 100% of that energy ultimately becomes thermal energy (heat). There is no energy lost to “computing” — the computation IS the heat.

Room Sizing Guide

The heat your space heater produces must match the heat your room loses. Room heat loss depends on insulation quality, window area, ceiling height, outdoor temperature, and whether the room is above, below, or between other heated spaces. Here are practical guidelines for typical North American residential construction.

A quick rule of thumb for Canadian winters: plan for approximately 20–30 BTU per square foot for well-insulated rooms, and 30–45 BTU per square foot for poorly insulated rooms (old windows, minimal wall insulation, concrete basement). These numbers assume an outdoor temperature of around -20 °C, which is a reasonable worst-case for most of southern Quebec and Ontario.

Seasonal Considerations

Bitcoin space heaters are most valuable during heating season (October through April in most of Canada). During summer months, you have options:

• Power down for summer — Turn off the space heater when you no longer need heating. This is the simplest approach and eliminates the electricity cost during months when the heat is unwanted.
• Relocate to a basement or garage — Move the unit to a space where the heat can be tolerated or vented outside. Basements tend to stay cool naturally.
• Duct the exhaust outside — Using ducting and a window vent adapter, you can pipe the hot exhaust air out of the room entirely. This lets you keep mining year-round while dumping the heat outside.
• Reduce hashrate — Underclock the miner to reduce power draw and heat output during shoulder seasons (spring/fall) when you need some heat but not full blast.

Noise Management

Let’s be honest: ASIC miners are loud. A stock Antminer S9 pushes 75–80 dB — roughly the volume of a vacuum cleaner running continuously. An S17 is even louder. The entire purpose of D-Central’s space heater enclosure design is to bring that noise down to livable levels.

How the Enclosure Reduces Noise

The space heater enclosure achieves noise reduction through three mechanisms:

1. Fan replacement — The stock 120mm Antminer fans (designed for airflow volume at any noise level) are replaced with premium silent fans: Noctua iPPC-3000, Arctic P14 Max, or similar. These fans move the same volume of air at a fraction of the noise.
2. Airflow path lengthening — The enclosure routes air through a longer path with bends, which attenuates high-frequency noise from the ASIC chips and heatsinks. Noise energy is absorbed by the enclosure walls along the path.
3. Enclosure damping — The 3D-printed case material absorbs some vibration that would otherwise transmit directly from the miner’s chassis to the surrounding air.

Expected Noise Levels

Additional Noise Reduction Tips

• Vibration isolation — Place the space heater on a thick rubber mat or anti-vibration pads. This prevents the enclosure from transmitting vibrations through the floor or shelf, which can amplify noise.
• Room placement — Corners amplify sound. Place the unit away from room corners and walls for the lowest perceived noise.
• Ducting — For the ultimate noise reduction, you can duct the exhaust through a wall or closet using 6-inch flexible duct. The duct itself acts as an additional noise attenuator, and the miner can sit in a closet or adjoining room while the warm air enters your living space.
• White noise masking — At 45–50 dB, the consistent fan hum is actually pleasant for many people. It functions like a white noise machine. Many D-Central customers report sleeping better with their space heater running.
• Fan speed tuning — As discussed in the configuration section, reducing fan speed reduces noise. Use the minimum speed that maintains safe chip temperatures.

Routine Maintenance

A Bitcoin space heater is a mechanical and electronic device running 24/7 under thermal stress. Regular maintenance keeps it running efficiently, extends its lifespan, and prevents failures. Here is your maintenance schedule.

Weekly Checks (2 Minutes)

• Visual inspection — Glance at the unit. Are the fans spinning? Is warm air flowing from the exhaust? Any unusual sounds (grinding, clicking, buzzing)?
• Check the miner’s web dashboard — Verify all hashboards are reporting, hashrate is in the expected range, chip temperatures are within limits, and shares are being accepted by the pool.
• Check for dust accumulation — Look at the intake vent. If you see visible dust buildup on the intake grille, a cleaning is due.

Monthly Maintenance (15 Minutes)

• Dust the intake and exhaust — Use compressed air (canned air or an electric duster) to blow dust off the intake grille, exhaust vent, and any visible fan blades. Dust buildup on heatsink fins reduces thermal efficiency and forces fans to work harder.
• Inspect the power cord and connections — Look for fraying, discoloration, or heat damage at the plug, cord, and PSU connection point. A cord that feels excessively warm during normal operation may indicate a poor connection or undersized wire — replace it.
• Verify network connectivity — Check that the Ethernet cable is securely seated and the miner shows a stable network connection. A flaky Ethernet connection means lost shares and lost revenue.
• Check pool dashboard — Log into your mining pool’s website and review your hashrate trend over the past 30 days. A gradual hashrate decline may indicate a failing hashboard, thermal paste degradation, or fan performance loss.

Quarterly Deep Maintenance (45–60 Minutes)

Every three months — or more frequently if you live in a dusty environment, have pets, or run the unit in a room with carpet — perform a thorough cleaning.

1. Power off the unit — Unplug the power cord from the wall outlet. Wait 60 seconds for capacitors to discharge and for the miner to cool down.
2. Open the enclosure — Remove the top section of the case to access the miner and fans.
3. Blow out all dust — Using compressed air at moderate pressure, blow dust off:
   • Heatsink fins on all hashboards (this is the most critical area)
   • Fan blades and fan hub motors
   • Control board and connectors
   • PSU intake and exhaust vents
   • Interior case surfaces

   Work from intake to exhaust to push dust out, not further in. Do this outdoors or in a well-ventilated area — there will be dust.

4. Inspect fan bearings — Spin each fan by hand. It should rotate smoothly with minimal friction. If a fan feels gritty, wobbles, or makes noise when spun, it is wearing out and should be replaced before it fails.
5. Inspect all cable connections — Gently tug each power connector to verify it is still firmly seated. Check for any discoloration or melting at connector pins, which indicates a failing connection that must be repaired.
6. Check the thermal interface — On older units (12+ months of continuous operation), the thermal paste or pads between the ASIC chips and heatsinks may have dried or degraded. If chip temperatures have been creeping up gradually despite clean heatsinks and functional fans, the thermal interface is the likely cause. Replacing thermal paste is an intermediate-level repair — see the Thermal Paste Replacement section.
7. Reassemble — Close the case, reconnect power and Ethernet, and verify normal operation on the miner’s dashboard.

Thermal Paste Replacement

Thermal paste (or thermal pads, depending on the miner model) is the thermal interface material between the ASIC chips and the heatsinks. Over time — typically 12–24 months of continuous operation — thermal paste dries out and loses its thermal conductivity. This causes chip temperatures to rise, which forces the miner to throttle performance or triggers thermal shutdowns.

Signs you need thermal paste replacement:

• Chip temperatures 10+ degrees higher than when the unit was new, with clean heatsinks and functional fans
• Frequent thermal throttling or shutdowns during normal operation
• One hashboard running significantly hotter than others

How to replace thermal paste on an Antminer hashboard:

1. Power off and fully disconnect the miner. Remove the hashboard from the chassis.
2. Remove the heatsink(s) from the hashboard — typically held by screws or spring clips.
3. Clean all old thermal paste from both the chip surfaces and heatsink base using 99% isopropyl alcohol and a lint-free cloth or coffee filter.
4. Apply a thin, even layer of quality thermal paste (Arctic MX-4, Noctua NT-H1, or equivalent) to each ASIC chip surface. Use the “X” pattern for rectangular dies or a center dot for square dies.
5. Reinstall the heatsink with even pressure. If using screws, tighten in a cross pattern to distribute pressure evenly across all chips.
6. Reinstall the hashboard, reconnect power cables, and test.

Filter Maintenance

If you have added intake filters to your space heater (recommended for homes with pets or high dust), clean or replace them monthly. A clogged filter restricts airflow, raises chip temperatures, and forces fans to spin faster (louder). Hold the filter up to light — if you cannot see through it, it is time to clean or replace.

For DIY filtration, a sheet of furnace filter material cut to size and secured over the intake vent with magnetic strips works well and costs pennies per change.

Troubleshooting

Most Bitcoin space heater issues fall into a handful of categories. Here are the most common problems and how to solve them.

No Hashrate / Miner Not Hashing

Symptoms: The miner powers on, fans spin, but the dashboard shows 0 TH/s or “no hashboard detected.”

• Check all hashboard power connectors — A loose 6-pin connector is the #1 cause. Power off, open the enclosure, and firmly reseat every power connector.
• Check the control board data cables — The ribbon cables connecting each hashboard to the control board can work loose during shipping or from vibration. Reseat them.
• Check PSU output — If the PSU is failing, it may not deliver enough power to spin up the hashboards. Listen for clicking sounds from the PSU, which indicate overload protection tripping.
• Test hashboards individually — If you have three hashboards and only one or two are detected, the missing hashboard may be faulty. Swap the data cable connections to confirm whether the issue follows the hashboard or the control board port.

Overheating / Thermal Shutdown

Symptoms: Miner shuts down automatically, dashboard shows chip temperatures above 90 °C, or hashrate drops significantly during operation.

• Check fan operation — Are all fans spinning? A failed fan causes immediate overheating. Replace any non-functional fans.
• Clean the heatsinks — Dust-clogged heatsink fins lose most of their cooling capacity. Blow them out with compressed air.
• Check airflow path — Ensure nothing is blocking the intake or exhaust vents. Even a piece of paper or a curtain draped over a vent can cause overheating.
• Check ambient temperature — If the room is already 30 °C+, the miner cannot cool itself effectively. Improve room ventilation or relocate the unit.
• Thermal paste degradation — If the unit is 12+ months old and temperatures have gradually increased, replace the thermal interface material.
• Reduce hashrate — On custom firmware (Braiins OS), you can underclock the miner to reduce power draw and heat generation.

Sudden Noise Increase

Symptoms: The unit was running quietly and suddenly becomes noticeably louder.

• Fan bearing failure — A fan with a failing bearing will produce grinding or clicking sounds. Spin each fan by hand (with power off) to identify the culprit. Replace the fan.
• Temperature spike — The miner detected high chip temperatures and ramped fan speed to maximum. Check the dashboard for temperature readings and diagnose the underlying cause (dust, thermal paste, blocked vent).
• Vibration resonance — The unit may have shifted position, creating a contact point between the enclosure and the surface it sits on that amplifies vibration. Adjust placement or add vibration-dampening pads.
• Foreign object — Something fell into the intake vent and is contacting a fan blade. Power off, open the enclosure, inspect and remove.

Network / Pool Connection Issues

Symptoms: Miner hashes but shares are not being accepted, pool shows “offline,” or the miner’s web interface is unreachable.

• Check the Ethernet cable — Swap to a known-good cable. Check both ends for solid clicks in the RJ-45 jacks.
• Verify pool settings — Typos in the pool URL, port number, or worker name will prevent share submission. Double-check everything character by character.
• DNS resolution — If the miner cannot resolve the pool’s hostname, it cannot connect. Try using the pool’s IP address instead of its hostname as a test.
• Firewall / ISP blocks — Some ISPs block mining traffic. Try a different Stratum port (many pools offer alternative ports). If your ISP is blocking port 3333, try port 443 or 25.
• Router DHCP exhaustion — If your router has run out of DHCP addresses, the miner will not get an IP. Check your router’s DHCP pool and expand it if needed, or assign a static IP to the miner.

Hashboard Drops Out Intermittently

Symptoms: One hashboard disappears from the dashboard periodically, then reappears after a reboot. Hashrate fluctuates.

• Loose power connector — The hashboard’s 6-pin power connector may not be fully seated. Power off, reseat, and verify the clip is engaged.
• Loose data ribbon cable — The flat cable between the hashboard and control board may have a marginal connection. Reseat both ends firmly.
• PSU power ripple — An aging PSU may produce unstable voltage under load, causing hashboards to drop. Test with a different PSU if available.
• Hashboard fault — If the problem persists after reseating all connections and testing with a different PSU, the hashboard itself may have a failing component. Contact D-Central ASIC Repair for professional diagnosis.

# SSH into your Antminer (replace IP with yours)
ssh [email protected]

# Check miner status and hashboard detection
cat /var/log/messages | grep -i "chain"

# View real-time chip temperatures
cat /tmp/freq

# Check miner process is running
ps | grep bmminer

# View current mining configuration
cat /config/bmminer.conf

# Monitor live miner output
tail -f /var/log/messages

# Check network connectivity to your pool
ping stratum.braiins.com

# View kernel messages for hardware errors
dmesg | tail -50

Frequently Asked Questions

When to Call a Professional

Bitcoin space heaters are built to be maintainable by their owners. The cleaning, filter replacement, fan swaps, and pool configuration covered in this guide are all owner-level tasks. But some issues require professional diagnosis and repair:

• Dead hashboards — If a hashboard is not detected after reseating all connections and testing with a known-good PSU, it likely has a failed ASIC chip, voltage regulator, or other board-level component. This requires micro-soldering and diagnostic equipment.
• PSU failure — Never open a power supply yourself. PSU capacitors hold lethal charge even when unplugged. A clicking, sparking, or non-functional PSU should be replaced.
• Control board failure — If the miner does not boot, does not obtain a network address, or the web interface is unresponsive after a firmware reflash, the control board may need replacement.
• Burnt connectors or PCB traces — Discolored, melted, or charred connectors or PCB areas indicate a serious electrical fault that must be professionally repaired before the unit can safely operate again.
• Persistent overheating after all maintenance steps — If you have cleaned the heatsinks, replaced thermal paste, verified fan operation, and the miner still overheats, there may be an internal fault on a hashboard causing excessive current draw.

D-Central Technologies has repaired over 2,500 ASIC miners since 2016. Our repair facility in Laval, Quebec handles everything from routine hashboard repairs to complex micro-soldering on BM1387, BM1391, BM1397, and BM1362 ASIC chips. We understand space heater builds because we designed them — we know exactly how the miner, enclosure, and airflow interact.

Your Bitcoin space heater is more than a gadget — it is a statement. It says that you understand thermodynamics, that you refuse to waste a single joule of energy, and that you believe electricity should do double duty. Every kilowatt-hour that flows through your space heater secures the Bitcoin network, contributes to hashrate decentralization, and earns satoshis — while keeping your home warm through the coldest months of the year.

This is the dual-purpose mining thesis that D-Central has championed since 2016. We are not waiting for mining hardware to become “efficient enough” for home use — we are hacking the hardware that exists today into solutions that work for real people, in real homes, in real Canadian winters. Your heating bill was going to pay for electricity anyway. Now it also mines Bitcoin.

Stay warm. Stack sats. Decentralize hashrate.

— The D-Central Technologies Team
Bitcoin Mining Hackers since 2016 | Laval, QC, Canada
Phone: 1-855-753-9997